<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			td{
				text-align: center;
			}
			td:empty::before{
				content: "/";
			}
		</style>
	</head>
	<body>
	<table border="1" cellspacing="0" height="200px" width="450px">
		<tr>
			<td>姓名</td>
			<td>二级</td>
			<td>四级</td>
		</tr>
		<tr>
			<td>张三</td>
			<td>61</td>
			<td></td>
		</tr>
		<tr>
			<td>李四</td>
			<td></td>
			<td>620</td>
		</tr>
		<tr>
			<td>王五</td>
			<td>99</td>
			<td></td>
		</tr>
	</table>	
	</body>
</html>
